PHP GD, imagecreatefromstring( ); how to get the image dimensions?

Question

Normally I use imagecreatefromjpeg() and then getimagesize(), but with Firefox 3 I need to go round this different. So now im using imagecreatefromstring(), but how do I retreive the image dimensions now?

Answer 1

imagesx() and imagesy() functions seem to work with images made with imagecreatefromstring(), too.